Well-drilling apparatus.



C. S. WRIGHT.

WELL DRILLING APPARATUS.

APPLICATION FILED MAY 29,1914.

1,18%337. I Patented May 9,1916.

3 SHEETS-SHEET I.

WITNE SSES INVENTOR ZMMXM QT/Za M C. S. WRIGHT.

WELL DRILLING APPARATUS.

APPLICATION FILED MAY 29, I914.

Patented May 9, 1916.

3 SHEETSSHEET 2 INVENTOR WITN ESSES C. S. WRIGHT.

WELL DRI LL|NG APPARATUS. APPLICATION FILED MAY 29,1914.

1,182,337. I Patented May 9,1916.

3 SHEETSSHEET 3- F" WITNESSES y 6 INVENTOR y? while the rotary table is being driven by paratus.

UNTTEU STATES PATENT OFFTOE.

CLYDE S. WRIGHT," OF TOLEDO, OHIO, ASSIGNOR TO THE NATIONAL SUPPLY COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

WELL-DRILLING APPARATUS.

1 1 2 337 Specification of Letters Patent. 7 Patented May 9, 1916,

Original application filed July 30, 1913, Serial No. 782,126. Divided and this application filed May 29,

1914. Serial No. 841,792.

To all whom it may concern:

Be it known that I, CLYDE S. WRIGHT, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented new and useful Improvements in Well-Drilling Apparatus, of which the following is a specification.

My invention relates to well-drilling aploose on the shaft, the former being larger than the latter, the sprocket wheel 10 being connected by the sprocket-chain 12 to the sprocket-wheel 13 on the drive-shaft 6, and the sprocket-wheel 11 being connected by the sprocket-chain 14 to the sprocket-wheel 15 on the said drive-shaft. 16 is a sprocket-wheel secured to the driveshaft 6 which sprocket-wheel is driven from It is the object of my invention to provide an engine or other motor, not shown. a rotary drilling machine with apparatus 17 is a sprocket-wheel loose on the shaft called a draw-works for pulling pipes out and provided with the sprocket-chain 18 for of the drilled hole or letting them down driving the well-known rotary, or rotary into the same, the said apparatus being contable, of a drilling outfit. The shaft 6 has structed to allow the operator to stop the running of the rotary table of the drilling machine while the draw-works apparatus is( in use, whereby the danger to workmen and the wear on the drive-chains and the bearings is reduced. I provide means whereby the draw-works apparatus may remain idle tatable with the shaft.

20 ,is the clutch member fixed to the sprocket-wheel 17. The clutch member 19 is slid into and out of engagement with the member 21 by means of the clutch lever 22 pivoted between its ends to the bracket 23 on the member 5. The outer end of the lever 22 is connected by the link 24 to the upper arm 25 on the upright rock-shaft 26 having bearings connected to the member 3. The lower end of the shaft 26 is provided with the arm or handle 27 located a little above the said apparatus.

Other minor objects will appear hereinafter.

Referring to the accompanying drawings, Figure 1 is a side elevation of a drawworks embodying my invention; Fig. 2, an the bearing 8. end elevation looking toward the right on The shaft 6 is provided with the Winches Fig. 1; Fig. 3, an and elevation looking to- 28 of usual form. The speed of the shaft ward the left on Fig. 1; Fig. 4, a detail of 6 may be varied by using the smaller drivethe interlocking bars for the drum clutches; sprocket 29 instead of the sprocket 16. Fig. 5, a perspective ofthe clutch-interlock- The shaft 9 is provided with the two clutch ing mechanism and ad acent parts; and Fig. members 30 and 31 slidable thereon and ro- 9, 3 21 1 l f my l e l lOn With parts tatable therewith, the former adapted to inm sec ion.

On the drawings, 1 is the bed member, 2 the top member, and 3, 4, and 5 the connecting members for the members 1 and 2, the said members constituting a frame for supporting the mechanism of my improved draw-works. The horizontal drive-shaft 6 has its bearings supported by the members 3, 4, and 5, and the drum? has its bearings 8, 8 supported by the members 8 and 4, 9 representing the shaft to which the drum is rigidly connected. The shaft 9 is provided with the two sprocket-wheels 10 and 11, both latter with the sprocket-wheel 11. The clutch-member 30 is slid on the shaft 9 by the yoke 32 pivoted'to the bracket 33. The yoke is provided with the handle 34 extending substantially at a right angle to the shaft 9 and located so as to be engagea'ble by the right knee of the operator as he stands facing the member 3. The clutch-member 31 is slid on the shaft 9 by the clutch lever 35 pivoted between its ends tothe bracket 36 on the member 5 below the shaft 9. The lower end of the lever 35 extends down back terlock with the sprocket-wheel 10, and the thereon the slidable clutch member 19 roof the bottom member 1 so as to be beyond the floor 41, and is connected by the link 37 to the arm 38 on the rock-shaft 39 which extends to the forward side of the frame, where it is provided with the arm 40 lying in front of the member 3 just above the floor 41. The spring 48 normally holds the clutch-member 31 away from the sprocketwheel 11.

The bearing 8 is provided with the forwardly projecting guide-block 42 having the horizontal hole 43 and the vertical hole 44, the holes crossing each other at one side or for a portion of their width. The flat horizontal bar 45 pivoted to theyoke 32 or a. lug on the arm 34 is slidable in the hole 43. and the flat vertical bar 46 has its lower end pivoted to the foot-lever 47 and is slidable in the hole 44. The bars 45 and 46 are pro- 'vided on their adjacent edges with the notches 48 and 49, respectively, the depth of the notches preferably equaling the distance that the said holes cross each other. The notch in one bar is of such a depth that the other bar can be moved across this notch provided this notch is opposite the hole in which the second bar slides. One bar can be caused to enter the notch in the other bar by bringing both notches 48 and 49 opposite the holes 43 and 44, and when one bar has entered the notch in the other bar, by the operation of one clutch member 30 or 31, the latter bar is locked so that ,it cannot be slid in the block 42 suflic'iently to permit the other clutch member to be operated.

The foot-lever 47 rests on the arm '40. The spring 48 holds the clutch member 31 on the shaft 9 open, then the clutch member 30 on the shaft 9 being open the bars 45 and 46 will have their notches opposite each other. If the lever 34 be pushed to the right by the operators knee the clutch member 30 becomes locked to the sprocket-wheel 10 and the bar 45 is drawn to the right also and caused to enter the notch 49 in the bar 46, thereby preventing the operator from moving the clutch-member 31 into engagement with the sprocket-wheel 11. If the operator had moved the lever 47 instead of the lever 34, the shaft 9 would have been connected to the sprocket-wheel 11 and the bar 46 would have been drawn down in the notch 48, as shown in full lines on Fig. 4, and the clutch member 30 could not have been connected to the sprocket-wheel 10.

When it is desired to use the drum 7 to ra se or lower pipe or for any other purpose, it is desirable that the chain 18 for driving the well-known rotary shall not travel, as it not only wears out the chain and the table, but it is also dangerous to the workrnen about the well being drilled. Accordingly, the operator acuates the handle 27 so as to slide the clutch-member 19 away from the member 20, whereupon the sprocket wheel 17, the chain 18, and the parts driven thereby come torest.

50 is the brake lever for actuating the brake-bands 51 on the drum-heads. The shaft 52 is actuated directly by the lever 50 and the shaft 52 operates the brake-bands in the usual manner. The weighted arm 53 returns the parts to normal position after the brake-bands have been applied to the drum and the handle 50 has been released. One end 54 of each brake-band is connected loosely to the shaft 52 and the other end 55 is connected to an arm 56 secured to the said shaft. The brake-mechanism shown and described is old as shown by reference to Patent No. 1,027,253, granted May 21st, 1912, to H. G. Johnson.

All the handles and operating levers 27, 34, 47, and 50 are arranged close together where the operator can apply his left hand to the handle 27, his right hand to the brake-lever 50, his right knee to the lever 34, and his left foot to the lever 47 Without shifting his position bodily.

The rotary drilling outfit hereinbefore mentioned being old, it may be briefly described. The horizontal shaft 57 is mounted in the journal boXes 58 on the bed 59. The shaft 57 is driven by the sprocket-chain 18 which gears with the sprocket-wheel 60 secured to the shaft 57 carrying the bevel gear-wheel 61, which drives the rotary table 62, provided with the well-Known rollergrips 63 for engagement with the pipe 64 7 so as to cause it to rotate with the table and so as to permit it to be reciprocated during drilling operations by any suitable mechanism. Such mechanism is well-known and isnot illustrated as the specific construction thereof forms no part of the present invention. Rotary tables with roller grips are old, but I prefer the table shown in my application, Serial Number 820,554, filed February 24th, 1914."

This application is a division of my application, Serial 30th,1913.

ll claim 1. In a well-drilling apparatus, a shaft, a rotary drum thereon, a countershaft, a ro-- tary table, gearing between the countershaft and the table, a clutch on the countershaft for disconnecting the said gearing from thecountershaft, two gearings between the countershaft and the drum for driving the latter, the gearings being constructed to give the drum difierent speeds for a given speed of the countershaft, and two clutches on the said shaft for connecting either of the last two gearings to the drum.

2. In a well-drilling apparatus, a shaft, a rotary drum thereon, a countershaft, a rotary table, gearing between the counter- Number 782,126, filed July shaft and the'table, a clutch on the counter- I shaft for disconnecting the said gearing either of the last two gearings to the drum,

and a separate lever for operating each 10 clutch, the said levers being adjacent to one another.

Signed at Toledo, Ohio, this 27th day of May, 1914.

CLYDE S. WRIGHT. Witnesses: v

R. F. HILL, H. R. NOFTZ. 

